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87807996 = 22333126227
BaseRepresentation
bin1010011101111…
…01011111111100
320010020002221000
411032331133330
5134434323441
612414010300
72114232663
oct516753774
9203202830
1087807996
11456244a1
12254a6990
13152652c3
14b939dda
157a972b6
hex53bd7fc

87807996 has 48 divisors (see below), whose sum is σ = 235002880. Its totient is φ = 28324080.

The previous prime is 87807991. The next prime is 87808037. The reversal of 87807996 is 69970878.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87807991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9766 + ... + 16461.

Almost surely, 287807996 is an apocalyptic number.

It is an amenable number.

87807996 is an abundant number, since it is smaller than the sum of its proper divisors (147194884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87807996 is a wasteful number, since it uses less digits than its factorization.

87807996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26271 (or 26263 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The square root of 87807996 is about 9370.5920837480. The cubic root of 87807996 is about 444.4722878019.

The spelling of 87807996 in words is "eighty-seven million, eight hundred seven thousand, nine hundred ninety-six".

Divisors: 1 2 3 4 6 9 12 18 27 31 36 54 62 93 108 124 186 279 372 558 837 1116 1674 3348 26227 52454 78681 104908 157362 236043 314724 472086 708129 813037 944172 1416258 1626074 2439111 2832516 3252148 4878222 7317333 9756444 14634666 21951999 29269332 43903998 87807996